如果您正在寻找在线图像压缩器，请查看本文以获取一些最好的免费工具列表，以在不损失质量的情况下在线压缩图像。^{(compress image online)}可以在不影响质量的情况下减小图像尺寸。

在线压缩图像的免费工具

1] 小PNG^{(1] TinyPNG)}

TinyPNG可能是最有用且易于使用的在线图像尺寸缩小器，一次最多可以压缩 20 张图像。但是，每个文件的最大大小为 5 MB。谈到图像格式，您可以使用此工具使用PNG或JPG图像。^(JPG)前往官方网站，将您的图像放在指定的位置。之后，它将压缩图像并让您下载它。最好的部分是您还可以将图像保存到您的Dropbox帐户。

2]海妖^{(2] Kraken)}

它与TinyPNG^(TinyPNG)非常相似，但看起来要好得多。在功能^{(Functionality)}方面，您可以获得此工具的更好选择。除了您的计算机或移动设备之外，还可以从不同位置（例如Box、Google Drive、Dropbox ）对图像进行成像。您可以上传PNG或JPG图片。最有趣的是你可以选择你想压缩多少。在这种情况下，如果你压缩很多，你可能会失去质量。另一个有用的功能是您可以直接从Kraken 网站^{(Kraken website)}将压缩图像上传到Dropbox。

3] Compressor.io

Compressor.io是一个外观完全不同的网站，具有您需要的所有基本功能。如果您的图像具有GIF或SVG等任何其他格式（ ^(SVG)JPEG或PNG等标准格式除外），您可以使用此工具在线减小图像大小。文件大小限制为 10 MB，但您一次只能上传一张图片。完成压缩后，您可以在屏幕上看到差异。稍后，您可以将其下载到您的计算机上，也可以将其保存在Google Drive或Dropbox中。

4]优化^{(4] Optimizilla)}

当你有很多图片要压缩时，你可以选择Optimizilla，它允许用户一次上传 20 张图片。另一个有用的功能是您可以一次上传不同的图像格式。上传后，可以将压缩级别调高或调低以满足您的要求。虽然您无法像其他工具一样将压缩图像上传或保存到Google Drive或Dropbox，但您当然可以将它们下载到您的计算机上。

5]工具^{(5] Toolur)}

Toolur图像压缩是另一个使用照片压缩工具的简单站点，它几乎可以立即减小文件大小。最好的部分是您一次可以上传 25 张图片，但每个文件应在 30 MB 以内。它具有不同的压缩级别，其中一些可能会损坏图像质量 - 因此您必须仔细选择压缩级别。谈到支持的格式，您可以上传PNG、JPEG以及BMP图像。唯一的缺点是它比其他工具慢。

6]立即压缩^{(6] Compress Now)}

CompressNow可能是该类别中最快的工具。它可以在一秒钟内压缩多个图像。虽然您可以一次上传多张图片，但最大大小限制为 9 MB。您可以上传各种格式的图像，包括JPG、JPEG、PNG和GIF。就像一个智能工具一样，它会显示一个压缩栏，您可以使用它来更改压缩级别。要使用此工具，您需要上传图片，然后点击立即压缩^{(Compress now)}按钮。像Optimizilla一样，您可以一次上传不同的图像格式。

相关阅读：^{(Related reads:)}

• Radical Image Optimization Tool 让您轻松优化图像^{(Radical Image Optimization Tool lets you optimize images easily)}
• Caesium：用于优化和减小图像大小的开源软件。

Best free tools to compress image online without losing quality

If you are looking for an online image compressor, cheсk out this article to get thе list of some of the best free toolѕ to compress image online without losing quality. It is possible to reduce image size without compromising the quality.

Free tools to compress image online

1] TinyPNG

TinyPNG is probably the most useful and easy to use online image size reducer that can compress up to 20 images at a time. However, the maximum size for each file is 5 MB. Talking about the image format, you can use either PNG or JPG image with this tool. Head over to the official website, and drop your image/s in the earmarked spot. Following that, it will compress the image and let you download it. The best part is you can also save the image to your Dropbox account as well.

2] Kraken

It is quite similar to TinyPNG, but it looks much better than that. Functionality wise, you can get better options for this tool. It is possible to image images from various locations, e.g., Box, Google Drive, Dropbox, apart from your computer or mobile. You can upload PNG or JPG image. The most interesting thing is you can choose how much you want to compress. In that case, if you compress a lot, you may lose the quality. Another useful feature is you can upload the compress image/s to Dropbox directly from the Kraken website.

3] Compressor.io

Compressor.io is a quite a different looking website that comes with all the essential features you need. If your image has any other format like GIF or SVG – other than standard formats such as JPEG or PNG, you can use this tool to reduce the image size online. The file size limit is 10 MB, but you can upload only one image at a time. After finishing the compression, you can see the difference on your screen. Later, you can either download it to your computer, or you can save that in Google Drive or Dropbox.

4] Optimizilla

When you have a lot of images to compress, you can opt for Optimizilla, which allows users to upload 20 images at a time. Another useful feature is you can upload different image formats at a time. After uploading, it is possible to make the compression level higher or lower to meet your requirement. Although you cannot upload or save the compressed image to Google Drive or Dropbox, like other tools, you can certainly download them to your computer.

5] Toolur

Toolur image compression is another easy site to use a photo compression tool that can reduce the file size almost instantly. The best part is you can upload 25 images at a time, but each file should be within 30 MB. It has different compression levels some of which may damage the image quality – so you have to select the compression level carefully. Talking about the supported formats, you can upload PNG, JPEG as well as BMP images. The only drawback is it is slower than the other tools.

6] Compress Now

CompressNow is probably the fastest tool in this category. It can compress multiple images within a second. Although you can upload multiple images at a time, the maximum size limit is 9 MB. You can upload images in various formats including JPG, JPEG, PNG, and GIF. Like a smart tool, it shows a compression bar, which you can use to change the compression level. To use this tool, you need to upload image/s and then, hit the Compress now button. Like Optimizilla, you can upload different image formats at a time.

Related reads:

• Radical Image Optimization Tool lets you optimize images easily
• Caesium: Open source software to optimize and reduce image size.

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